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Settle

Settle

The world’s leading software for three-dimensional soil settlement analysis. Used by top geotechnical engineers for civil projects around the world, Settle is a simple yet sophisticated program that helps you analyze vertical consolidation and settlement under foundations, embankments, and surface loads

Settle

Applications

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Settle (formerly Settle3D) is a three-dimensional program for the analysis of vertical consolidation and settlement under foundations, embankments and surface loads. The program combines the simplicity of one-dimensional analysis with the power and visualization capabilities of more sophisticated three-dimensional programs.

You can quickly create complex soil profiles and loading conditions, and view results in three dimensions. Modeling can be staged, and time-dependent consolidation analysis can be performed including primary and secondary consolidation (creep) at user defined time intervals. Linear and non-linear materials can be modeled. Groundwater elevation can be staged, and horizontal and vertical drainage conditions can be specified.

Circular, rectangular or polygonal load shapes can be defined with uniform or variable load magnitudes, and flexible or rigid foundations. Loading can be staged and applied at any depth (e.g. to simulate piles or raft foundations). Excavations can be defined, and loads applied within excavated areas. A special embankment designer allows you to easily define multi-stage layered embankments. Back analysis options allow you to determine the pre-load fill height or time required to achieve a given settlement.

Loading stresses are calculated in 3D, and pore pressure dissipation and settlement are calculated along 1D strings. Results can be contoured along any horizontal or vertical plane or plotted along any line. Settlement deformation can be viewed in three dimensions, magnified by a user-defined scale factor. Data presentation is highly interactive, and contours and graphs are updated in real time as you change the data type, depth or location. Results can be exported to Excel with a single mouse click.

Software Screenshots

Settle Figure 1: Liquefaction analysis results.
Settle Figure 1: Liquefaction analysis results.
Settle Figure 1: Liquefaction analysis results.
Settle Figure 2: View graphical and tabular CPT data interpretation results.
Settle Figure 2: View graphical and tabular CPT data interpretation results.
Settle Figure 2: View graphical and tabular CPT data interpretation results.
Settle Figure 3: Model complex staged embankments with Embankment Designer.
Settle Figure 3: Model complex staged embankments with Embankment Designer.
Settle Figure 3: Model complex staged embankments with Embankment Designer.
Settle Figure 1: Liquefaction analysis results. Settle Figure 1: Liquefaction analysis results. Settle Figure 2: View graphical and tabular CPT data interpretation results. Settle Figure 2: View graphical and tabular CPT data interpretation results. Settle Figure 3: Model complex staged embankments with Embankment Designer. Settle Figure 3: Model complex staged embankments with Embankment Designer.

Applications

Product Highlights

  • What’s New in Settle v4.0
  • Modeling
  • Liquefaction Analysis
  • CPT Analysis
  • Empirical Method
  • Stress Computation Method
  • Wick Drain Analysis
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What’s New in Settle v4.0

Settle v4.0 introduces a variety of new features to make your analyses simpler and quicker than ever before, including:

  • The ability to model ground improvement
  • Advances to the CPT analysis tool and soil profiling
  • New staged material properties
  • Enhanced results interpretation options

Additionally, the following features have been added:

Non-horizontal ground surface

Users can now define a non-horizontal ground surface using boreholes. By defining a top elevation for each borehole, a ground surface is interpolated. Results can be computed using a query point, query line, and field point grid options, or on the new 3D surface contour.

Horizontal loading

Horizontal loads (i.e. wind turbine loads) can now be entered in Settle. Both horizontal and vertical loads can be defined for the Boussinesq and Westergaard stress computation methods.

In addition to the ability to model horizontal loading, a number of new results are now calculated in Settle, including Loading and Effective Stresses in X and Y directions, among others.

Updated liquefaction analysis module

The following additions have been made to the liquefaction analysis capabilities of Settle:

  • Post-triggering analyses for CPT and VST
  • Pre-defined Triggering calculation methods for SPT
    • Youd et al. (2001)
    • Idriss and Boulanger (2008)
    • Cetin et al. – Deterministic (2004)
    • Cetin et al. – Probabilistic (2004)
  • Incorporation of ground profile in LDI calculations

Modeling

Settle offers state of the art interactive input and editing, allowing you to create a model and view results with a few mouse clicks. Two-dimensional geometry is defined in the Plan View and displayed in both the Plan View and 3D View

Boundaries

Settle provides powerful CAD based modeling features for defining the load and excavation geometry. Boundaries can be defined by:

  • drawing with the mouse
  • entering coordinates in the prompt line
  • entering coordinates in a spreadsheet dialog
  • importing from a DXF file or other file types

Interactive editing

Interactive editing features make it extremely easy to edit the model geometry. Boundaries can be moved, deleted, copied, stretched, and convenient right-click shortcuts simplify editing even further.

Although model geometry is primarily edited in the 2-dimensional Plan View, some editing options are available in the 3D view using right-click shortcuts.

DXF import/export

Load and excavation boundaries can be imported into Settle from a DXF file with the Import DXF option. You can select which entities you would like to import, using the checkboxes in the DXF Options dialog.

Boundaries can also be exported from Settle to a DXF file with the Export DXF option.

Liquefaction Analysis

A liquefaction analysis can be carried out in Settle based on Standard Penetration Test (SPT), Cone Penetration Test (CPT), and Shear Wave Velocity (VST) data.

For each input data type, there is a customized Liquefaction Options dialog. In the Liquefaction Options dialog, you can:

  • Specify the Earthquake Load
  • Enter Input Data (import and export options are available)
  • Automatically graph input data with depth
  • Specify correction factors
  • Apply advanced scaling factors

The liquefaction analysis results are displayed in chart form and are easy to interpret. The chart displays are fully customizable in terms of markers and lines, legends, fonts and colors.

Each part of the liquefaction analysis (Data, Triggering, and Post-Triggering) is displayed in its own tab. Each chart can also be toggled to full-screen.

In addition, for each aspect of the liquefaction analysis you can use checkboxes to select which methods' results you want to display.

CPT Analysis

The new Cone Penetration Test (CPT) analysis module can be used on its own as a fully-functional CPT interpretation software. In addition to this, the CPT analysis feature can be used in conjunction with the liquefaction analysis module, or in conjunction with the Boreholes function to model a non-horizontal soil profile.

The CPT analysis module is a major addition to Settle. For each set of CPT data, over 25 different parameters are calculated, and five SBT options are available:

  • Robertson 1986
  • Robertson 1990
  • Robertson 2010
  • Schneider 2008 I
  • Schneider 2008 II

CPT allows for a continuous soil profile and can collect up to 5 independent readings in a single sounding. Settle v4.0 features a CPT analysis module based on:

  • Cone tip resistance (qc)
  • Sleeve friction (fs)
  • Penetration pore water pressure (u2)

Empirical Method

A variety of empirical methods exist for calculating immediate settlement in cohesionless soil. These methods are generally based on data from field tests (Standard Penetration Test, Cone Penetration Test, etc.) and require little user input. In general, settlement can only be calculated for regular shaped loads (rectangles and circles). The following empirical settlement methods are available in Settle:

  • Schmertmann
  • Peck, Hanson and Thornburn
  • Schultze and Sherif
  • D'Appolonia
  • Burland and Burbidge

The empirical methods can only be applied to rectangular or circular loads. You can apply any or all methods to a given load. The calculated empirical settlement is displayed in the Plan View, for all currently applied methods.

Stress Computation Method

The Stress Computation Method determines how the three-dimensional stress distribution due to loading is calculated. The available options are:

  • Boussinesq
  • Westergaard
  • Multiple Layer
  • Vertical Ratio (2:1)
  • Vertical Ratio (angle)

The Boussinesq method uses the theory of elasticity to calculate the vertical stress under a point load in a homogeneous, semi-infinite half space. To compute the stresses under a distributed load, the Boussinesq solution is integrated over the area of the footing.

The Multiple Layer method considers the stiffness (elastic modulus) of each soil layer, when computing the stress distribution due to loading. If the soil layers have significantly different stiffness values, then the resultant stress distribution can be very different from the Boussinesq solution, which assumes homogeneous elastic properties.

The 2:1 method assumes that the zone of influence for an applied rectangular load has a slope of 2:1.

For a non-rectangular footing, the stress is calculated by computing the area of the load at the surface. With increasing depth, the area over which the load is applied increases at a 2:1 ratio and the magnitude of the loading stress decreases correspondingly.

Wick Drain Analysis

Settle allows you to model the pore pressure condition, horizontal and vertical drainage conditions, and hydroconsolidation regions in several ways:

  • Pore Pressure Definition
  • Interlayer Drainage
  • Wick Drains
  • Hydroconsolidation

If your analysis includes groundwater, a region of vertical wick drains can be defined with the Add Wick Drain Region option to accelerate the process of soil consolidation. The area of a wick drain region is a user-defined polygon in the Plan View. The wick drains can also be displayed in the 3D view. If wick drains are defined then you can specify the ratio of horizontal to vertical flow for each material.

Getting Support
Help yourself to a comprehensive database of product support. Subscribe to get free upgrades and expert help for your software. See the latest software updates and download the newest version.